Some good ideas guys, thanks.

If I am not mistaken, Lucas has already replaced cam and/or crank sensor due to a previous problem Paul was having. Not to say this couldn't be a problem again though.

It isn't so much the logging locking up on this one (which I have also seen on some earlier versions of 1.19 especially with high tooth count timing patterns), but the ECU is actually going offline ever so briefly. This shows as just missing data in the internal log, and a flat line when doing a PC log. If you watch the coms status screen during the pull, you could actually see it blink offline for just a split second. This was when we were troubleshooting the miss that ended up being traced at least in part to the alternator (it was a very consistant miss at around 8000 rpm, irrespective of load). We did try a different AEM during this phase of the troubleshooting, and it made no difference.

This new cut (similar to the above but the symptoms are caused under different situations and it is not consistent) could very well be EMI still from other sources, grounding, cam/crank sensor glitchiness, etc.

 

John do you have this problem if you free rev the car to 10K rpms?

Or does it only happen during a pull?

 

Paul,
Can you update us with your latest mod list: (seems like you change/switch parts every month....lol)

 

edit...double post

 

I have not gotten to see the lastest version of the problem, but when we were looking at the 8K cutout it would do it on very light load rev through first gear though the exact cut rpm was not as consistant as it was under full throttle 3rd gear runs. It sounds like the current issue is a lot more finicky to reproduce, even at WOT.

 

With Lucas and John at the helm I'm certain that the gremlins will be worked out soon, but even given those issues I sure wouldn't be ashamed of the results to date It was a blast to have you guys here for the last tuning session, exciting stuff !!

Tom

 

Congrats on the AWESOME numbers. Hope you guys get the bugs worked out!!